Cryptocurrency trading software system (ie real-time trading system, turtle trading system, arbitrage trading system);
System trading, including technical analysis, pair trading and other system trading methods;
New trading techniques, including econometric methods, machine learning techniques and other newer trading methods;
Portfolio and cryptocurrency assets, including symbiotic cryptocurrency and crypto asset portfolio research;
Market conditions research, including bubble or collapse analysis and extreme situations;
Other miscellaneous cryptocurrency trading research.
In this survey, our purpose is to compile the most relevant research in these fields and extract a set of descriptive indicators that can give an idea of the maturity level of research in this field.
There have been related work discussions or partial investigations in the literature related to cryptocurrency transactions. Kyriazis et al. investigated the efficiency and profitable trading opportunities of the cryptocurrency market. Ahamad et al. and Sharma et al. conducted a brief survey of cryptocurrencies. Ujan et al. briefly introduced the cryptocurrency system. Ignasi et al.  conducted a bibliometric analysis of Bitcoin literature. These work results focus on specific areas of cryptocurrency, including cryptocurrency and cryptocurrency market introduction, cryptocurrency system/platform, Bitcoin literature review, etc. But as far as we know, no one has provided a comprehensive survey before, especially focusing on cryptocurrency transactions.
In summary, this article has made the following contributions:
definition. This article defines cryptocurrency trading and divides it into: cryptocurrency market, cryptocurrency trading model and cryptocurrency trading strategy. The core content of this survey is the cryptocurrency trading strategy, and we cover all aspects of it.
Multidisciplinary investigation. This article has conducted a comprehensive survey of 126 cryptocurrency trading papers, covering different disciplines such as financial economics, artificial intelligence, and computer science. Some papers may involve multiple aspects and will be investigated for each category.
analysis. This article analyzes the research distribution, data sets and trends of cryptocurrency trading literature.
Vision. This article points out the challenges faced by cryptocurrency transactions and future research directions, aiming to promote further research.
Figure 2 depicts the paper structure, which is determined by the review mode used. For more details on this, please refer to Section 4.